other information

DRIVE CYCLE FOR ‘GREEN’ ECM

Normal wear and tear results in fuel and air metering requirements will vary
over time. The ECM can adapt to this by learning the new compensation values
required. If the vehicle battery is disconnected, all adaptive values
held in the ECM memory will be lost (i.e. set to zero); the ECM is then referred
to as ‘Green’. To enable the engine to run correctly and for the evaporative
purge system to function, the ECM must ‘relearn’ these values.

Idle vehicle until fully warm. Coolant temperature gauge just below
mid point (48-50%),let the engine idle for a further three minutes minimum.

Drive the vehicle, with the air conditioning off, on level road using
a constant throttle (use speed control) for at least 60 seconds,
in the following gears, at the stated engine speeds for sections 1,2,3 and 4
in table 1.

Return to rest and leave the vehicle idling for 60 seconds.

1

3.0 L

Manual

N

Idle

3.0 L

Auto

P/N

Idle

2.5 L

Manual

N

Idle

2.5 L

Auto

P/N

Idle

2

3.0 L

Manual

Third

2000rpm

3.0 L

Auto

Third

1750rpm

2.5 L

Manual

Third

2000rpm

2.5 L

Auto

Third

1750rpm

3

3.0 L

Manual

4th

2250rpm

3.0 L

Auto

4th

2000

2.5 L

Manual

4th

2250

2.5 L

Auto

4th

2250

4

3.0 L

Manual

4th

2750rpm

3.0 L

Auto

4th

2500rpm

2.5 L

Manual

4th

2750rpm

2.5 L

Auto

4th

2750rpm

If sufficient adaptive learning has occurred, the evaporative purge valve
should now be operating. This can be verified manually by either touching or
listening to the valve. It is possible to feel the valve switching by touching
the evaporative purge valve.
Warning: the Evaporative Purge valve is likely to be HOT.